Patent
Remote control variable attenuation device for an antenna amplifier
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TLDR
In this article, a variable attenuation device is provided for an antenna amplifier by providing high attenuation and low attenuation signal flowpaths connected to the amplifier input by respective pin diodes.Abstract:
A variable attenuation device is provided for an antenna amplifier by providing high attenuation and low attenuation signal flowpaths connected to the amplifier input by respective pin diodes. The biasing of the diodes and, thus, the attenuation factor provided, is controlled in proportion to the output of a rectifying circuit which, in turn, provides a DC output proportional to the magnitude of a given polarity of the AC signal supplied to the amplifier from inside the subscriber's home.read more
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References
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Patent
Signal distribution system
TL;DR: In this paper, the power supplied to one terminal of a programme distribution line (see Group XXXIX) is stabilized by a reversely conducting Zener diode 45 between base and emitter of a transistor 44 which is held conductive by the full-wave rectified voltage derived from a transformer 41.
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Method and system for providing power to booster amplifiers in h.f. cable network
TL;DR: In this paper, a network for transmitting high-frequency energy via cable from a source to multiple users at different locations is described, where the network is organized in several levels including a primary level, into which the h.f.c. energy is fed and secondary and lower levels branching off the primary level.